Pump.



Patented June AI7, |902.

J. W. REYNOLDS.

PUMP.

(Application Bled. Mar. 21, 1901.) (No Model.) 2 Sheets--Sheef I.

wlTNEs'Es; y INVENOH I. QA/M2M@ wff/M BY I fr fm-71:; i W6. 1%?" @"Vk ATTORNEY Y TH: uonms PETERS oo, Priorauwo., wemnoon. n, c.

l .Patented lune I7, |902. J. W. REYNOLDS. Y

PUMP.

(Application mea Mar. 21, 1901.)

2 Sheets-#Sheet 2.

(No Model.)

WIT-NEssEs': W4/fi INVENR M ATTORNEY UNITED STATES PATENT OEEICE.

JOHN W. REYNOLDS, OF BALLSTON SPA, .NEW YORK.

PUMP.

SPECIFICATION forming' part of Letters Patent N0. 702,590, dated. June 17, 1902.

Application filed March 21, 1901. Serial No. 52,180. (No model.)

citizen'of the United States of America, and

a resident of Ballston Spa, Saratoga county, New York, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

My invention is an improved casing for a centrifugal pump which is especially designed for pumping sulfurous acids.

It consists in the peculiar construction and arrangement of devices hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a cross-sectional View of a centrifugal pump embodying one form of my invention. Fig. 2 is a side elevation of the pump shown in Fig. l and partly in section, the section being taken on the line 2 2. Figs. 3, 4, and 5 are detail sections illustrating modifications of my invention. l

A represents the casing of a centrifugal pump which is made in sections, the sections being bolted and having an annular radial groove Xformed between them.' The casing is of the kind usually employed in this class of pumps, and it has the usual inlet-opening a and in the centers of its respective sections the outlet-opening a and the stuffing-box c', the latter being formed integrally with one of the sections and disposed opposite the opening. The stuffing-box c' is shouldered with an annular shoulder, as at c3, and an annular shoulder a3 is formed around the vopening a. B represents a shaft which has its bearing in said stuffing-box and on which is mounted the usual piston or fan. (Not shown.)

C represents a lining for the p11-mp. This lining is of lead and is formed by casting it within the sections of the pump, as hereinafter described. In the preferred form of my invention the lining is held in place within the casing by means of projections c, which iit in openings formed in the casing. The projections c serve as anchors for the lining. The projections c are here shown as being tapered, as are also the openings in the casing. Preferably the projections are circular,

and their greatest diameters are adjacent the outer surface of the casing. In other words, each projection and the opening in the casing The lining O constitute a dovetail mortise.

`by the process of casting.

is continued into the stuffing-box c', where it. engages the'shoulder c3, and about the ange of the inlet a, as indicated at O2, where it engages theshoulder as. The openings` through which the connection-bolts for the sections pass are also lined.

The lining C is formed within the casing The sections, with their openings, constitute a part of the mold and act as chills. may be used in connection with the casingsection to obtain the requisite thickness for the lining. The material of the lining in its molten state is then poured into the mold in the usual manner. It will be observed that at this time'the securing projections c will be formed in the openings of the sections. After one section has been supplied with the lining it is used as a. part of the mold, in which an adjacent casing-section is embodied.

l'The purpose of .this is that when the molten metal is poured into the second mold it will run to the section already lined at that annular hanged portion X in the groove X,

where a joint of the lining is to be made. Thus perfect joints for the liningcan be made between adjacent sections. By thus forming the lining by casting the same in the sections of the pump, using said sections as chills, and forming the projections c integrally with the lining the latter is so rmly secured in place as to effectually prevent the same from bulging or` creeping, which is a matter of importance, owing tothe fact that sulfurous acids are pumped at different temperatures, and. hence there is a tendency of the lead lining to contract and expand. The shouldered openings in the centers of the casing-sections being engaged by the lining, as hereinbefore stated, it will be understood that the central portions of the lining are immovably secured to the casing.

-I-Iaving thus described my claiml. Apump-casing comprisingapairof hardmetal sections bolted together, an opening ct' being formed in one side of the meeting portions of said sections, one of the latter having a central inlet shouldered opening a, in one side of the casing and the other having the centrally-disposed stuffing-box c' having an annular shoulder therein in the opposite invention, I

Any desired metal core other, and a lining of soft material, said lining having integral portions extending into and through said opening and stuffing-box and engaged with the shoulders thereof, substentially as described.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

JOHN W. REYNOLDS.

Vitnesses:

FRANK WHALEN, WM. A. MEHAN. 

